Find the centre and radius of the circles : `1/2 (x^2 + y^2) + x cos theta + y sin theta - 4 = 0`

Find the centre and the radius of the circles x^(2) + y^(2) + 2x sin theta + 2 y cos theta - 8 = 0

Radius of the circle x^(2)+y^(2)+2x cos theta+2y sin theta-8=0, is

Find the centre and radius of the circle 3x ^(2) + (a + 1) y ^(2) + 6x -9y + a + 4 =0

The centre and radius of a circle given by equation x =2 +3 cos theta, y =3-3 sin theta are

Find the coordinates of the centre and radius of each of the following circle: (1)/(2)(x^(2)+y^(2))+x cos theta+ys int h eta-4=0

The centre and radius of the circle represented by the equation x=4+5cos theta and y=2+5sin theta are

Find the centre and radius of the circle whose parametric equation is x= -1+2 cos theta , y= 3+2 sin theta .

Radius of the circle x^(2)+y^(2)+2x cos theta+2y sin theta-8=0 is 12 . 33.2sqrt(3)4.sqrt(10)5.2

The centre of the circel x=-1 + 2 cos theta, y =3 + 2 sin theta, is

The locus of the centre of the circle x^(2)+y^(2)+4x cos theta-2y sin theta-10=0 is (A) An ellipse(B) A circle(C) A hyperbola